Home / 21,190.73-29,244.60-12,238.61

Finding the Fourth Proportional to 21,190.73, 29,244.60 and 12,238.61

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Solution

The fourth proportional to 21,190.73, 29,244.60 and 12,238.61 is: 16,890.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,190.73 : 29,244.60 = 12,238.61 : x
  2. Step 2: Convert to fraction form
    21,190.73/29,244.60 = 12,238.61/x
  3. Step 3: Cross multiply
    21,190.73x = 29,244.60 × 12,238.61
  4. Step 4: Simplify right side
    21,190.73x = 357,913,254.01
  5. Step 5: Solve for x
    x = 357,913,254.01/21,190.73
  6. Step 6: Final answer
    x = 16,890.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.